JPH0344899Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure for fixing a lining material applied to the inner surface of a hopper in a ship's hold or storage tank, or to the inner surface of a shooter for transporting cargo.

[Conventional technology]

Conventionally, there has been a structure shown in FIG. 7 as a structure for fixing a lining material to the above-mentioned inner surface, that is, the lining material construction surface (hereinafter referred to as construction surface). The structure of the fixed part shown in Fig. 7 has a shaft body 2 such as a stud on the construction surface 1.
A stepped recess 6 in which a nut 4 is screwed into a thread groove 3 carved in the shaft body, and a lining material 5 is formed by the nut 4.
is pressed against construction surface 1.

Synthetic resin (e.g. ultra-high molecular weight polyethylene)
When fixing the lining material 5 made of
t ₁ is required to be 5 mm or more. In addition, in order to securely screw the nut 4 onto the shaft body 2, the number of engaged threads between the two is required to be 3 to 4 or more, and when converted into length, the number of threads is 4 to 5 mm. Become. Therefore, the total thickness T of the lining material 5 needs to be at least 9 to 10 mm, which is the sum of both.

On the other hand, as shown in FIG. 8, the plug 8 is hammered into the shaft 2 to prevent the nut 4 from loosening, and the fixed part of the lining material 5 is made flush with the surface of the lining material 5 and the surface of the plug 8. If you try to increase the lubricity,
Depth equivalent to the sum of the length of 4 to 5 mm necessary to obtain a reliable tightening force by the nut 4 and the thickness of the plug body 8
t ₂ is required for the recessed portion 6.

[Problem that the invention attempts to solve]

Of the above-mentioned fixing part structures, if the one shown in FIG. 7 is adopted, the thickness of the lining material must be 9 mm at the bottom, and if the one shown in FIG. 8 is adopted, the thickness will be greater than that. If the thickness is made thinner than this, the lower part of the recessed part 6 may be damaged, the number of engagements between the threads of the nut 4 and the shaft body 2 may be insufficient, and the nut 4 may not be able to obtain sufficient tightening force. 4 may fall off, or the plug body 8 may become too thin and must be replaced early due to wear, causing other inconveniences.

However, lining materials applied to increase the slipperiness of the inside surfaces of hoppers in ship holds, storage tanks, etc., or the inside surfaces of shooters for transporting cargo, need to have excellent wear resistance and lubricity. The thicker the lining material, the more expensive it is. Therefore, in order to improve economic efficiency, it is necessary to adopt a structure that can reliably fix the thin lining material to the construction surface. In addition, the lining material must be easily fixed to the construction surface and must be securely fixed.

From this point of view, the fixing part structure explained in FIGS. 7 and 8 has severe limitations in improving its economic efficiency, and furthermore, it cannot be fixed unless the nut 4 is screwed in and out, so it can be fixed easily. It is difficult to say that it is a thing.

This invention solves these problems,
It is an object of the present invention to provide a fixing part structure that can reliably fix even a lining material thinner than the above-mentioned one to a construction surface.

[Means for solving problems]

In order to solve the above problems, the present invention has a plurality of elastic support pieces arranged in parallel to form a flat hollow truncated cone shape on a stopper fitted into a recessed part of a lining material. The gist is that the lining material is fixed to the lining material construction surface by engaging the outer circumferential surface of the shaft protruding from the lining material construction surface in a tensioned state in the removal direction.

[Effect]

According to the above means, the distal ends of the plurality of elastic support pieces are tightly engaged with the shaft body in the pulling direction, thereby preventing the plug body from falling off. Therefore, it is no longer necessary to screw the nut onto the shaft and engage the three to four threads as in the conventional case. In addition, when a plurality of elastic support pieces are applied to the shaft and then the stopper is hammered into the recessed part of the lining material, the elastic support pieces deform against the elasticity and engage with the shaft in the withdrawal direction. be done.
Furthermore, when the lining material is attached to the construction surface, when the lining material tries to move in the direction of removal, the lining material is pressed against the construction surface by the pressing force of the stopper due to the elastic restoring action of the plurality of elastic support pieces. Fixed.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 illustrates a fixing part structure according to an embodiment of the present invention. In the figure, the lining material 5 placed on the construction surface 1 is provided with a round hole 10.
A shaft body 2 protruding from the construction surface 1 is fitted into the shaft body 0. Further, a plug 11 is fitted into the circular stepped recess 6 of the lining material 5 without any gap.

As shown in detail in FIG. 3, the plug body 11 has a circular recess 12 on its back side, and a hooking washer 13 is attached to this recess 12. As shown in FIG. 4, the footing washer 13 has a circular hole 14 in the center, and a plurality of cuts or slits (hereinafter referred to as
Both are called slits. ) 15 is engraved,
Elastic support pieces 16 are formed between each slit 15. Moreover, as clearly shown in FIG.
work together to form a flat hollow truncated cone shape. When the plurality of elastic support pieces 16 are in their natural state, the inner diameter of the circular hole 14 is slightly smaller than the outer diameter of the shaft 2 (see FIG. 1).
Further, the hooking washer 13 has a cylindrical insertion part 17 on the outer periphery, and this insertion part 17 is fitted into an annular groove 18 provided in the plug body 11 as shown in FIG. has been done.

When the plug body 11 is fitted into the recessed part of the lining material 5 as shown in FIG. It is engaged with the outer circumferential surface of the body 2 in a tensioned state in the withdrawal direction. In this state, the elastic support pieces 16 are bent upward in the figure against elasticity, and the shaft body 2 is elastically compressed by the plurality of elastic support pieces 16. Therefore, the lining material 5
When the plug tries to move in the removal direction and force is applied to the plug 11, force is applied to the plurality of elastic support pieces 16 of the hooking washer 13, and the pressing force of the plug 11 due to the elastic restoring action causes the lining to be removed. Round hole 10 in material 5
The peripheral edge of the lining material 5 is pressed against the construction surface 1 to reliably prevent the lining material 5 from coming off.

The shaft body 2 may be a round bar or a screw shaft as shown in the figure, but if it is a screw shaft, the elastic support piece 16 will fit into the trough of the screw as shown in detail in FIG. It engages with one of the screw threads 2a in a tight manner. Therefore, the plug 11 is more reliably prevented from falling out of the recess 6 of the lining material 5, and the plug 11 is held on the shaft 2 without wobbling. This has the advantage of being reliably prevented by the pressing force.

In the above example, the hooking washer 13 is fixed to the plug body 11 by fitting the cylindrical insertion portion 17 of the footing washer 13 into the annular groove 18 of the plug body 11. However, in this case, the fifth
As shown in the figure, there are protrusions 1 at multiple locations on the end of the insertion portion 17.
9 is provided and this protrusion 19 is hooked on the wall surface of the groove 18, the hooking washer 1
3 is securely fixed to the stopper 11, and the hooking washer 13 is less likely to fall off.
Also, when molding the plug body 11, the hooking washer 1 is
Of course, 3 may be embedded in one piece.

FIG. 6 shows another embodiment. As clearly shown in the figure, this plug body 11 has a truncated conical shape,
A mortar-shaped recess 20 provided in the lining material 5
The surface is flush with the surface of the lining material 5. Since the other points are similar to the fixing part structure explained in FIGS. 1 to 3, the same parts are given the same reference numerals and detailed explanation will be omitted.

[Effect of idea]

This invention has 3 to 4 nuts and shafts, unlike the conventional one.
They are not screwed together via the threads of the mounts, but simply the elastic support piece is engaged with the shaft in a tensioned state in the withdrawal direction. Therefore, even if the thickness of the lining material is made thinner than in the conventional case, the thickness of the lower part of the recessed portion can be maintained at the same level as in the conventional case. Furthermore, the plug fitted into the recessed part of the lining material is prevented from falling off by the above-mentioned elastic support piece engaging with the shaft, which effectively prevents the lining material from slipping out. . Therefore, even a thin lining material can be reliably fixed to the construction surface. On the other hand, the work of fixing the lining material to the construction surface can be done by fitting the plug into the recess of the lining material and engaging the elastic support piece with the outer peripheral surface of the shaft.
Installation of the lining material is much easier than in the conventional case, which involves screwing in and taking out a nut.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the structure of the fixing part according to an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of a part of Fig. 1, and Fig. 3 is a plug body with a hooking washer attached. 4 is a view of the footing washer seen from below, FIG. 5 is a partially enlarged cross-sectional view showing a modification of the footing washer attached to the stopper, and FIG. 6 is a view of another embodiment. FIG. 7 is a sectional view showing a conventional fixing part structure, and FIG. 8 is a sectional view showing another conventional example. 1... Lining material construction surface, 2... Shaft body, 5...
...Lining material, 6,20...Recessed part, 11...
Plug body, 16... elastic support piece.

Claims (1)

[Scope of utility model registration request] A plurality of elastic support pieces are arranged in parallel to form a flat hollow truncated cone shape on a stopper fitted into a recessed part of the lining material, and the tips of these elastic support pieces protrude from the construction surface of the lining material. A lining material fixing structure characterized in that the lining material is fixed to the lining material construction surface by being engaged with the outer circumferential surface of the shaft body in a tensioned state in the withdrawal direction.